A system including at least one computerized device with voice command capability processed remotely includes a low power processor, executing a loose algorithmic model to recognize a wake word prefix in a voice command, the loose model having a low false rejection rate but suffering a high false acceptance rate, and a second processor which can operate in at least a low power/low clock rate mode and a high power/high clock rate mode. When the first processor determines the presence of the wake word, it causes the second processor to switch to the high power/high clock rate mode and to execute a tight algorithmic model to verify the presence of the wake word. By using the two processors in this manner, the average overall power required by the computerized device is reduced, as is the amount of waste heat generated by the system.
Legal claims defining the scope of protection, as filed with the USPTO.
2. The system of claim 1, wherein the at least one computerized device further includes an activity indicator, the activity indicator being operable to indicate when the second processor determines that the predefined wake word is present in the second buffer.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
July 3, 2020
December 6, 2022
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